I had a small set of Legos in the early 1960's. I think they had just come out. I kept them, then when I had two sons, bought many sets for them. We spent endless hours building all kinds of things. The Legos are still here, and my wife's grandkids play with them now.
Harry, I had those American bricks, too, plus many other building toys: Erector set, Lincoln logs, Block City, Girder and Panel (beams and columns with snap on wall and roof panels), and more. Some of the sets were in HO train scale, and I used to make a whole town for my trains. Great times!
Sam